编码/解码Swift（Xcode 6.1）enum

我有

var priority : Priority! = Priority.defaultPriority func encodeWithCoder(aCoder: NSCoder) { aCoder.encodeInteger(priority.toRaw(), forKey: "priority") //toRaw may not yield the result I am expecting } required init(coder aDecoder: NSCoder) { priority = aDecoder.decodeIntegerForKey("priority") //complaining about conflicting types } 

与枚举是如下：

 enum Priority : Int { case defaultPriority = 0 case lowPriority = 1 case mediumPriority = 2 case highPriority = 3 } 

什么是编码/解码这个最好的方法？

Answer 1

Priority.init(rawValue:)应该可以工作。

 func encodeWithCoder(aCoder: NSCoder) { aCoder.encodeInteger(priority.rawValue, forKey: "priority") } required init(coder aDecoder: NSCoder) { priority = Priority(rawValue: aDecoder.decodeIntegerForKey("priority")) }